Commit f7eaf6e0 authored by Thomas Gleixner's avatar Thomas Gleixner Committed by Ingo Molnar
Browse files

x86/boot: Move EISA setup to a separate file 



EISA has absolutely nothing to do with traps, so move it out of traps.c
into its own eisa.c file.

Furthermore, the EISA bus detection does not need to run during
very early boot, it's good enough to run it before the EISA bus
and drivers are initialized.

I.e. instead of calling it from the very early trap_init() code,
make it a subsys_initcall().

Signed-off-by: default avatarThomas Gleixner <tglx@linutronix.de>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Steven Rostedt <rostedt@goodmis.org>
Link: http://lkml.kernel.org/r/20170828064956.515322409@linutronix.de


Signed-off-by: default avatarIngo Molnar <mingo@kernel.org>
parent 9aec458f

arch/x86/kernel/Makefile

+1 −0
Original line number Diff line number Diff line
@@ -111,6 +111,7 @@ obj-$(CONFIG_PARAVIRT_SPINLOCKS)+= paravirt-spinlocks.o 
obj-$(CONFIG_PARAVIRT_CLOCK)	+= pvclock.o

obj-$(CONFIG_X86_PMEM_LEGACY_DEVICE) += pmem.o



obj-$(CONFIG_EISA)		+= eisa.o

obj-$(CONFIG_PCSPKR_PLATFORM)	+= pcspeaker.o



obj-$(CONFIG_X86_CHECK_BIOS_CORRUPTION) += check.o

arch/x86/kernel/eisa.c

0 → 100644
+18 −0
Original line number Diff line number Diff line 
/*

 * EISA specific code

 *

 * This file is licensed under the GPL V2

 */

#include <linux/ioport.h>

#include <linux/eisa.h>



static __init int eisa_bus_probe(void)

{

	void __iomem *p = ioremap(0x0FFFD9, 4);



	if (readl(p) == 'E' + ('I'<<8) + ('S'<<16) + ('A'<<24))

		EISA_bus = 1;

	iounmap(p);

	return 0;

}

subsys_initcall(eisa_bus_probe);

arch/x86/kernel/traps.c

+0 −13
Original line number Diff line number Diff line
@@ -38,11 +38,6 @@ 
#include <linux/smp.h>

#include <linux/io.h>



#ifdef CONFIG_EISA

#include <linux/ioport.h>

#include <linux/eisa.h>

#endif



#if defined(CONFIG_EDAC)

#include <linux/edac.h>

#endif
@@ -969,14 +964,6 @@ void __init trap_init(void) 
{

	int i;



#ifdef CONFIG_EISA

	void __iomem *p = early_ioremap(0x0FFFD9, 4);



	if (readl(p) == 'E' + ('I'<<8) + ('S'<<16) + ('A'<<24))

		EISA_bus = 1;

	early_iounmap(p, 4);

#endif



	set_intr_gate(X86_TRAP_DE, divide_error);

	set_intr_gate_ist(X86_TRAP_NMI, &nmi, NMI_STACK);

	/* int4 can be called from all */

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